Could a signal from another world have been kept secret for 40 years? Navigate a strange 3D database and work with other players to piece together what happened. Discuss your way through fragments of found footage films, journals and documentary clips about space.
User reviews: Mixed (133 reviews) - 66% of the 133 user reviews for this game are positive.
Release Date: Aug 7, 2014

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Recommended By Curators

"What's most fascinating about this is how they used Full Motion Video to make film interactive by focusing on the discussion it provokes between people."
Read the full review here.


“A complex story about murder, particles and electronic music.”

“It’s approach to multiplayer gaming feels like a slice of the future.”
Rock, Paper, Shotgun

“One of the first ever online multiplayer story games, where the main gameplay mechanic is not combat -- it's discussion”

About This Game

Cloud Chamber is a Massively Multiplayer story game.

Explore a mysterious 3D database.

Investigate and discuss story fragments with other players.

Piece together what happened from fragments of found footage, secret journals and astrophysics documentary.

In Cloud Chamber, the science is real; the story is fiction, and the truth about Space unknown.

Starring Gethin Anthony (Game of Thrones) and Jesper Christensen (Casino Royale).

The story

Players collaborate with each other to explore, investigate and discuss the fragments of information they collect on their journey through the dataworld, writing the story themselves of a young scientist, Kathleen Petersen, who risks her sanity and betrays her father to save humanity from itself.

Kathleen is forced to choose between loyalty to her father or to betray him and everything she has believed to be true. Her decision will not only determine the Petersen Institute's future, it will impact all of humanity itself.

Was Kathleen's mother Murdered?

Is Kathleen Going Mad?

What Is the Signal?


  • Experience a unique ”found footage” story that combines emails, photographs, maps, diagrams, fiction film, electronic music and documentary films from the European Space Agency into one coherent story.
  • Navigate surreal 3D levels between the parts of the story.
  • Piece together a fragmented story with more 150 story fragments spread over 10 unique levels.
  • Cooperative multiplayer: analyse & discuss the content with other players to understand what happened.
  • Gains access to locked parts of the story by evaluating other players’ theories.
  • Evaluate other players’ explanations; upvote the good, downvote the bad.
  • Make up your own mind: present your theories to other players and get their feedback.
  • Internationally acclaimed actors – Gethin Anthony (Renly Baratheon from Game of Thrones) and Jesper Christensen (Casino Royale, Quantum of Solace).
  • Film fragments filmed by the team behind the original The Killing.
  • More then 30+ movies from the European Space Agency integrated in the storyline.

System Requirements

    • OS: Microsoft Window 7
    • Processor: 1.8Gz Dual Core Processor
    • Memory: 2 GB RAM
    • Graphics: DirectX 9 compliant video card with Shader model 3.0 support. Radeon R7 240 2GB or NVIDIA GT 630 2GB
    • DirectX: Version 9.0
    • Network: Broadband Internet connection
    • Storage: 5500 MB available space
    • Sound Card: Integrated
    • Additional Notes: Cloud Chamber uses QT Lite, which should auto install with the game.
    • OS: Microsoft Windows 7
    • Processor: 2.4 Gz Quad Core Processor
    • Memory: 4 GB RAM
    • Graphics: DirectX 9 compliant video card with Shader model 3.0 support. Radeon HD6850 or NVIDIA GeForce GTX 460
    • DirectX: Version 9.0
    • Network: Broadband Internet connection
    • Storage: 5500 MB available space
    • Sound Card: Integrated
    • Additional Notes: Cloud Chamber uses QT Lite, which should auto install with the game.
Helpful customer reviews
10 of 12 people (83%) found this review helpful
14.7 hrs on record
Posted: June 27
If you want a unique experience, this is it. Cloud chamber takes you on a journey of investigation where you can discuss your theories with other players. Thanks to the posting algorithm, these discussions decay over time so there is always a chance for new players to shine. You're actively encouraged to like and dislike what others write, and add a comment of your own. Through doing this you unlock the hidden content. So far by just spending a day on a node being social, I've found that the next day the content was unlocked for me. Even though this game is centered around science, no advanced knowledge is needed, though with some interest in the subject you might end up enjoying it more. It's a game to take your time with, do a little a day and just enjoy the journey.
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5 of 7 people (71%) found this review helpful
13.0 hrs on record
Posted: July 6
Don't play this game... it's a type of MMO that has 0 player base.
It also requires other people to work with you... cooperate with you.
Problem is, there is no one out there.
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2 of 3 people (67%) found this review helpful
9.7 hrs on record
Posted: June 25
I really really want to love this game! But... I just sorta like it. The concept is awesome... but its problem is that it requires you to post lots of stuff... and (hopefully) others will like it. This game will let you get to the end... but in a clueless way. It requires that you post tons of stuff and that others *like* your posts. If you do not get enough posts (on each and every level of the game) then you cannot see the rest of the game... so you do not get to see it all, much less figure it out. It there was some way to see all of the content without all of the posts and necessary likes, then I sould love this game! As it is... don't bother at this point... all discussions have been done, most new players do not post and "like" comments. If the Devs fix this problem... then this game would be worth it!
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5 of 9 people (56%) found this review helpful
1 person found this review funny
0.4 hrs on record
Posted: June 8
I didn't care too much for this "game" personally..

I'll start by saying I spent well over an hour just trying to get this game to start. It was frozen on a loading screen for about 10 seconds before it'd crash. It took a full reinstall of steam to even get it to load the first video.

I was not impressed with the videos. The in game social network isn't really active either, so it's difficult to unlock new content.

I will say the soundtrack was great though!

Can't say I recommend this. I ended up requesting a refund.
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3 of 6 people (50%) found this review helpful
1 person found this review funny
44.7 hrs on record
Posted: October 15
I premise that I have finished the games and I have put 30+ hours into it. Secondly, my advice is to stay away from this game. Let me explain why in this review.

The idea behind this game is very interesting: a game that challanges you to solve a mistery digging through pieces of documents, videos and pictures, cooperating with the other players.
Unfortunately, the realization of this concept is very disappointing and poor, and the gaming experience is not immersive at all.

The big fault of this game is that it is completely passive. You'll only have to read/watch the information presented to you and make your theory on the case. Unfortunately the truth is not revealed at the end, therefore you'll only be left just with a bunch of theories. Not rewarding at all.

The only bit of interaction in the game is due to the fact that not all the information is available. To unlock some documents/videos you have to write comments and hope that the other players upvote them or reply to them.
This mechanism is completely and utterly a poor idea, for multiple reasons:
1) It doesn't matter if the comment is useful or not, so what's the point of it?
2) There are ZERO active players, which means that there is no way to unlock that information. In other words, you'll pay for a game for which you can't access a good chunck of content (Pay not to play)!

It would have been much better if the developers had introduced enigmas to be solved in exchange of the locked information. This would have been more fun and it would have allowed players to 1) cooperate productively to solve the enigmas or 2) to be able to unlock the information even playing alone.

In the end, I wouldn't even call this a game.
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